Cutting elements for earth-boring tools, earth-boring tools including such cutting elements and related methods
US8919462B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 2013 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Oct 25, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Cutting elements, earth-boring drill bits having such cutting elements and related methods are described herein. In some embodiments, a cutting element for an earth-boring tool may include a diamond table having an indentation in a cutting face thereof and a shaped feature in a substrate at the interface between the diamond table and the substrate, the shaped feature corresponding to the indentation in the cutting face of the diamond table. In further embodiments, a cutting element for an earth-boring tool may include a sacrificial structure positioned within an indentation in a diamond table. In additional embodiments, a method of forming a cutting element may include positioning a sacrificial structure in a mold, positioning a powdered precursor material over the sacrificial structure, and pressing and sintering the powdered precursor material to form a diamond table having an indentation in a cutting face formed by the sacrificial structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.